CVE-2025-2596: Checkmk

Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days.

Session logout could be overwritten in Checkmk GmbH's Checkmk versions <2.3.0p30, <2.2.0p41, and 2.1.0p49 (EOL)

Affected products

• Checkmk Checkmk: before 2.1.0 (fixed in 2.1.0); version 2.1.0 only; version 2.2.0 only; version 2.3.0 only

Published 2025-03-26. Last modified 2026-06-17.